Bug 28876: Remove noscript preferences checks
Bug 28876: Remove noscript preferences checks

The noscript test was checking that some noscript preferences are
correctly set. The new version of noscript does not use those
preferences anymore, so we remove those checks.

boklm/tbb-testsuite,boklm/tbb-testsuite,boklm/tbb-testsuite,boklm/tbb-testsuite,boklm/tbb-testsuite